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3 years ago

Choose the true statement. -2 > -3 -2 < -3 -2 = -3

Mathematics

2 answers:

mars1129 [50]3 years ago

8 0

-2>-3 is the answer

Elena-2011 [213]3 years ago

7 0

Answer:

The True answer is -2>-3

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A veterinarian wants to know if pit bulls or golden retrievers have a higher incidence of tooth decay at the age of three. The v

BigorU [14]

Answer: B) [-0.0332,0.1332]

Step-by-step explanation: Confidence Interval is an interval where we can be a percentage sure the true mean is.

The confidence interval for a difference in population proportion is calculated following these steps:

First, let's find population proportion for each population:

$p_{1}=\frac{30}{120}=0.25$

$p_{2}=\frac{32}{160}=0.2$

Second, calculate standard deviation for each proportion:

$\sigma_{1}=\sqrt{\frac{0.25(0.75)}{120} } = 0.0395$

$\sigma_{2}=\sqrt{\frac{0.2(0.8)}{160} } = 0.0316$

Now, we calculate standard error for difference:

$SE=\sqrt{\sigma_{1}^{2}+\sigma_{2}^{2}}$

$SE=\sqrt{0.0395^{2}+0.0316^{2}}$

SE = 0.0505

The z-score for a 90% CI is 1.645.

Then, confidence interval is

$p_{1}-p_{2}$ ± z-score.SE

$0.25-0.2$ ± $1.645(0.0505)$

0.05 ± 0.0831

The limits of this interval are:

inferior: 0.05 - 0.0831 = $-0.0332$

superior: 0.05 + 0.0831 = 0.1332

The 90% confidence interval for the difference in the population proportion of pit pulls and golden retrievers is $[-0.0332,0.1332]$ .

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3 years ago

A regular pentagon is created using the bases of five congruent isosceles triangles, joined at a common vertex. The total number

Gala2k [10]

It's 54 degrees.

The internet is a wonderful friend. Type in "Pentagon split into triangles" on google images and you will find a diagram that finds it.

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3 years ago

Read 2 more answers

1 and 1/4 and 1 and 2/3 and 11/12 in greatest to least

Scorpion4ik [409]

1 2/3, 1 1/4, 11/12. That is the answer in greatest to least

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3 years ago

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Write an equivalent expression for m + m + m + m + m +6

ElenaW [278]

Answer:

6y+3

Step-by-step explanation:

correct me if i am wrong!

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3 years ago

Look at the graph shown:

gayaneshka [121]

The answer would be y= 4x + 4 over 3
Because your slope would be 4/3 and the formula you needed was y=mx+b

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3 years ago